Floor drain



March 16 1926.

LAFIN FLOOR DRAIN y ed w \f me F w di Orig Patented Mar. 16, 1926.

if UNiieo stares are rnnniiarin, or CHICAGO, iLLInors.

FLOOR DRAIN.

Application 'filed August 25, 1924. Serial No. 733,905.

To all whom imag concern: Be it knownthat I, FRED LAFiN, a citi- Zen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and u seful Improvements in Floor Drains, of which the following is a specification.

This invention relates to improvements in cellar-drains or devices adapted for the prevention of overflow of water into basements from sewers, catch-basins and the like. A large number of devices for automatitally preventing back-flow of water into basements, cellars and the like are offered on the market and are extensively used, nearly all such devices being more or less similar to back-pressure or check-valves. Practice has demonstrated that they cannot be relied upon to operate effectively for i the reason that water passing from the celler or basement into the drain and reversely,A

carries all sorts of solids which become lodged upon the valve-seat of the device and prevent effective closure of the valve so `that in the majority of instances the automatic devices serve only to restrict Ywithout preventing back-flow.

The object of my invention is to provide manually operable means for effectually preventing back-flow into basements or cellars, which may be used independently of or in conjunction with such automatic devices and will serveto permit the user to observe con-- ditions with respect to back-flow, as hereinafter fully described. f

Suitable embodiments of the invention are illustrated in the accompanying drawings, wherein Fig. 1 is a central vertical sect-ion of a cellar drain constructed in accordance with the invention.

Fig. 2 is a similar view of another einbodiment of the invention.

Fig. 3 is a plan section o-ii the line 3 3 of'Fig. 2.

Fig. 4: is a view partly in section and partly in elevation of a slightly modified enibodiment of the construction shown in Fig. 2

In its simplest and preferred embodiment, my invention consists of an internally threaded sleeve or floor element 1 provided with an external annular flange 2 and an aniiularly enlarged mouth portion 3, the upper face of the latter being adapted to be disposed Hush with 'the (usually concrete) .door of the basement ci* eeliar, the tiaiige 2 being adapted to be embedded Viii the concrete to thus firmly anchor the element 1.'` The lower end of the latter is adapted to bel connected, either by the internal threads thereof or by other suitable and well known means, with the intake end at of a trap, leading to the soil pipe through which water' passes from the floor into the sewer, the upper end of the trap-mouth 4t providing an -annular shoulder upon which a strainer plate, common in this art, may be mounted.

The element 1 mayconstitute a part of or externally threaded lower portion for engaging the internal threads of tlie element l. Said cap element 7 is further formed with a plane peripheral portion 7 between the peripheral threads thereof and the lower face of the flange 6. The gasket 5 surrounds the portion 7.

In the embodiment of Fig. 1, the cap element includes the vertical tube 8 which is show n as threaded into a threaded vcentral opening iii said cap but may be otherwise suitably associated with the latter. Said tube 8 will be of such length as to extend above the maximum lpossible water level capable of being .attained in the basement or cellar by back-flow and will be determined by local conditions.

In the embodiments shown in Figs. 2 to 4 inclusive, the element 9, corresponding to the element 1 of Fig. 1, is provided between its ends with a lateral branch 10 terminating in a threaded mouth portion 11 for connection with either a stand pipe 12, corresponding tothe pipe or tube 8 of Fig. 1 or a laterally extending pipe 13 associated at its other end with the stand-pipe 14 disposed at a distance from the element 9, the latter equipped with the sealing cap 15.

The function of the several embodiments 'shown is substantially the saine, the closure cap 7 or 15 being mounted in place to prevent back-flow during periods, as at night,

when the basement or cellar is wholly unoccupied or free froniobservation and back-` naarr is apt 110 fesait raam heavy ioo le true of the greet innjorilj,Y olf lined niente equipped with lhnir-drnine llnilz lhe letter 'function onlyY when itA .is desired to wash the floors or lio drain ont water spilled on the [loer during laundering or the like, l'helje heilig oni)r lew inelnneen where lhe drains lnnelion eonl'innnll;r lo drnin of? eeennge or leeilnge. lVhere the loller is lint slight, it muy he iierniitled lo nerinnnlnlge nronnd. the drnin :ind let olli` nl inlerrnls, this being preferable lo floodingY he lnleliin flow of .Sewage so 'frequently menrring in many lcities. i llenen, the f rdinnry cellar drnin muy be sealed so :lier ne .ilel drainage function is eoneermd, except at noch inlervals ns it may lie neeeesnry to open il: lo drain oil' llnsh or waslrwnler orilhe like.

It is desirnlile, however, that it Should he known before openingil the drain ilnil; (here will be no in-rnsh of miler duelo inicie-limi'. T he etnnfl-pipes S, or 'll permit olif-wrmtion in advance el relnovnl olt the een. il' lie- .ingr obvious tlnitthe Elend-pipe need nini' lie ndinnrily sealed :it the lion lo nrerenl in of Seweigns tol'he lmsfenienl or relier following;r evnpernlion of miler in the tiren diie to long?r disnse of l'he drain, :i eondilion thai. is notb nln'oi'mnon.

ll the elosnre eleinenl'y T or l5 in iiliire `und beek-flow from the soil nine oer-nre, it will occasion no more than the rieineolf hack-[low Waller info the Stond-pipe to n eertnin level, und, nnen relief from ihe condition Causing snc-li lmelvflow, the water in the stand-pipe will return into the soil-pipe,bnt

no long; an; :mid rendition eonl'iiniee, walter will etnnd in the sl'nndqiipe :ind wnrn '.ilireinel: nnsezllingr o1 opening' l'he floor drain.

l elnirn ses my invention .l lloor drnin eoinln'ieiner n vertically die posed inl'errnillr thi-ended sleeve open :it eneh end provided lieineen ile ends :1nd nii ils npiier end willi exernnl nnnnlnr (hinges,

'ndnpied lo he einhodied in l'he eonereiie ol n lloor :1nd with the opper 'lnee olf l'he upper flange enlislenlinlly llneh with the loor snrln'e, seid sleeve adapted lor lhrended con neelion with the inonlzh portion el? i lrnp lio lierelij; provide nn internnl. innnilzir shonl der within :ind lielween `the ende` olf' sind elriwe.y enid lleere vformed with :in integral loller-nl exl'ension lhereliy providing; n. lniernl ontlet therefor between the ends thereof', n #lend-nine neeoeinled with Suid ontlel; and exlendingr nhore the ninxinnnn `prohnhle flood level ol lnnlidlow Waiter, :in element hnring :inexim-nulli1 lhreanled lower norlien und :in nnnnlnr flange :drove Said lhrended portion :ind enneed from smid threads hy n plone gniriphernl poil'ion, Smid elenienl'r adept-- ed 'lor reinoinhhii nrfmeinlion willi the upper portion ol eind Sleeve lor rnevenlingi; huele' ilew of Wolter hrongll seid sleeve in linie of (lood, :ind :i llexihle lalms-:kel enrrrnnnlingi' Suid pinne peripheral portion und disposed heln'een l'lie lower 'lfzlee oi eeiid lnst-nnnie l El:ingge and. i'he top lnee oil the upper lionne of mid sleeve for providing n inter-tight joint'.

FRED LAFIN.

(ill 

